I'm curious, what's everyone's opinions on book covers?

Would you rather we return to the olden days when a cover consisted of the title and author's name or does the modern idea of pictures appeal to you? Do you base (some of) your book buys on the fact that they have a pretty cover (or, flip side, do you refuse to touch a book because you hate the cover)?

Do you want your series covers to match in style or do you just not care about the covers or way or another?

What about dustjackets? Useful or just a pain?

( My thoughts on covers )